How to Undo Checks Marked as Paid/Printed

Our problem is that the system incorrectly has marked a large number of checks as paid and printed. We would like to reset those checks (undo what was done) but are not sure how. What we normally do / what we did: 1. Account Payable > Payments > Pay Cycle Process > Payment Selection Criteria 2. Process (Payment Selection) 3. Details (Link) 4. Shows a list of all checks selected 5. Select just some of the checks 6. Process (Payment Selection & Creation) 7. Business Process involving Approvals > Check Printing > Positive Pay Button There is a Reset button on the screen but we are not sure how to make that available for the incorrectly marked as paid and printed checks since we cannot select those checks in the first place.